lifted99GMC

iTrader: (4)

the car has a 6.0L iron block and is currently running an externally leaking set of SCE copper gaskets. I pull the heads to replace with a set of cometic MLS gaskets and see that the block has been o-ringed, but no receiver groove on the AFR heads. I have heard people o-ringing the heads with MLS gaskets and having good luck, but not so much the o-ringing the block with MLS gaskets.

What would be the best option BESIDES the SCE? will the cometics work well with the O-ring? It will be a higher boost engine, with 8-900 RWHP.

what about smashing down, or removing the o-rings in the block and running a LS7 cometic so the compressed ring on the gasket will be sealing in a different location?

My machinist suggested the best route to go would be to pull and disassemble the engine, smash down the o ring into the block, and deck the block to make it all flat again...then go with MLS gaskets.


Thanks for your suggestions.

Sluggish

iTrader: (10)

Why not have a receiver ring cut into the heads? This is a good question, I am thinking about pulling my motor to have it o-ringed.

cjg454ss

iTrader: (27)

i run the ls9 gaskets with l92 heads. oring in thhe block. 1000rwhp, no sweat

1320

iTrader: (6)

This is good, but how bout being specific?

groove size? groove depth? stainless wire? copper wire? wire diameter?

stock gasket?

cjg454ss

iTrader: (27)

stainless wire, just throw the ls9 gaskets on there, torque it down. it will cut and seat just fine.